How does the FBI differ from the Central Intelligence Agency?
>https://www.fbi.gov/about/faqs/how-does-the-fbi-differ-from-the-central-intelligence-agency
"The CIA collects information only regarding foreign countries and their citizens. Unlike the FBI, it is prohibited from collecting information regarding “U.S. Persons,” a term that includes U.S. citizens, resident aliens, legal immigrants, and U.S. corporations, regardless of where they are located."